Bought size med (based on sizing chart). They were too small, returned to be exchanged for size Large. Western Bike credited my account instead of exchanging for Large. Ended up ordering a couple pair of Pearl Izumi ELITE Gel Gloves. Those are good gloves and fit perfectly.

3rd or 4th time purchasing Giro Monaco gloves, after 1st using Giro Bravo gloves, which I liked, and which lasted long time. Did not like 1st pair of Monaco gloves. Though leather and well gel padded, leather did not last long after repeated handwashes. Tried to minimize washes with 2nd pair, but eventually leather hardens & begins to crack. This pair appears a bit more flexible in design. Limiting washes to remove sweat and avoiding getting leather wet, only washing top mesh surface. This model II may last longer. Time will tell.